Journal
JOURNAL OF INTERVENTIONAL CARDIOLOGY
Volume 29, Issue 3, Pages 300-310Publisher
WILEY-HINDAWI
DOI: 10.1111/joic.12300
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Objectives: To prospectively compare the impact of ultrathin-strut cobalt-chromium (Cro-Co) bare metal stent (BMS) versus thin-strut stainless steel (SS) BMS on clinically driven target lesion revascularization (TLR). Background: Stent characteristics are an important determinant of restenosis. Thinner strut Cro-Co BMS is associated with a reduction of neointimal formation compared to SS BMS. The advantages of Cro-Co BMS in a real-world population is not clear. Methods: Patients undergoing percutaneous coronary intervention (PCI) with BMS for any reason were enrolled. Patient with multi-vessel PCI, multi-lesions PCI, PCI of unprotected left main and coronary grafts were not excluded. They were divided in two groups according to stent type: Cro-Co or SS group. The primary endpoint was clinically driven TLR at follow-up. Results: A total of 383 patients were enrolled: 222 in SS and 161 in Cro-Co group. During the follow-up, Cro-Co patients had a significantly lower occurrence of TLR compared to SS patients (1.9% vs 8.6%, P = 0.006). There were no significant differences for the composite endpoint of death, myocardial infarct, and stroke (4.9% in Cro-Co group vs 9.5% in SS group, P = 0.119). At multivariate analysis, the variables that were predictors of TLR were: use of SS stent (OR 4.43, P = 0.019) and diabetes (OR 2.84, P = 0.025). Conclusions: Ultra-thin strut Cro-Co BMS is associated with a significant reduction of clinically driven TLR in all comers population with any type of coronary disease complexity.
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